If that kind or arrangement is too rich, get creative - there are tons of popular bloggers in this scene. Start connecting with them. With a little incentive, you could get them to review or endorse you in an article for the launch.

Writing guest posts is another option. Fresh, unique content can attract the attention of bloggers - and if you write something that contributes real value to their readers - they'll be more than happy to let you include an opportunity for readers to opt-in to your program.